Machines



v (No Model.) v J. .H. NORTHRQP.

SPINDLE SUPPORT FOR SPINNING MACHINES.

No. 355,656. Patented Jan. 4', 1887.

* UNITED ST TES PATENT Fries.

JAMES H. NORTHROP, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO GEORGEDRAPERXSDV SONS, OF SAME PLACE.

SPlNDLE-SUPPORT FOR SPINNING-.MACHINES.

SPECIFICATION-forming part of Letters Patent. No. 355,656, dated January4:, 1887.

Application filed October 19, 1885; Serial No. IE'OfiElO. (No model.)

To all whom it may concern:

Be it known that I, JAMES H. NoR'rHRor, of Hopedale, county ofWorcester, and State of Massachusetts, have invented an Improvement inSpindle-Supports for Spinning-Ma chines, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like letters on the drawings representing like parts. I

This invention is an improvement on that class of spindles wherein thepintle of the spindle is placed in abolster,the lower end of which isfree to wander to a limited extent in an opening in a bolster-case,closed at its bottom to form an oil well or chamber.

In the class of spindle referred to the bolster is commonly surroundedby an elastic or fibrous packing, as inUnited States Patent N 0.227 129,

dated May 4, 1880, to which reference may be spindle; and to overcomethis difficulty is the object of this invention.

In my experiments to secure steadiness of rotation of the spindle I haveascertained that the elastic packing surrounding the bolster may bedispensed with, provided the bolster is steadied by a friction devicewhich presses upon it endwise orin the direction of its length, so thatthe bolster will derive all of its lateral movement from the spindle asthe latter moves sidewise in its efforts to center itself to'its load.

In accordance with my invention I have provided a friction-check toco-operate with and hold the bolster where it is left by the spindle;and my invention consists in the combination, with a spindle, bolster,and-bolster-case, of a friction-check to co-operate with and hold thebolster in the position in'which it is left by the spindle as the latterfinds its true center of rotation. r

Figure 1, in vertical section, shows a bolster,

its cooperating friction devices, the bolstercase, rail, nut, andsleeve-whirl, the spindle being shown in elevation. Fig. 2 is a sideelevation of the bolster and its attached parts removed from thebolster-case, and Fig.3 a section in the line a? 00, Fig. 1.

The step-rail A receivesin it the shank B of the bolster-case B, held inplace by the nut B the bolster-case being bored or chambered to containoil.

The spindle O has a sleeve-whirl,G, which is extended down over thespindle, all as usual.

The bolster (1, near the center of its length, is enlarged or madesomewhat spherical, as at d, to fit the inner bore of the bolster-case,the

bolster above and below the said middle part, d, being of smallerdiameter, so that the said bolster can tip in the bolster-case andenable the foot of the spindle to find its true center of rotation withrelation to the load on the spindle. As herein shown,the lower extremityof the bolster is reduced in diameter for a part of its length,suchreduced portion receiving upon it a washer or plate, a, of a size tosubstantially fit the interior of the bolster-case. The central opening,a, in the plate a is a little larger than the reduced part of thebolster withinthe said opening a,so that the bolster, acted upon by thespindle, may tip or move for the required or necessary distance. Theplate a will be notched at one edge, as shown, to enable it to pass thepin (1. which latter enters a groove in the enlarged part, (1, andrestrains the rotation of the bolster in the bolster-case.

On the reduced part of the bolster,be1ow and next the plate a, is placeda loose collar, b, which is kept pressed against the plate, preferablyby a rather stiff spiral spring, I), kept in place by the pin 11.

In operation the plate a, fitting the interior of the bolster-case,remains in fixed position while the spindle rotates in the bolster,restrained from rotation by the pin a and asthe spindle tips to find itstrue center of rotation I thereduced part of the bolster is tipped.

The shoulder 3 of the bolster rests on the plate a,and is held incontact therewith by the pressure of the spring b and loose collar b,and[0O consequently the movement of the bolster is requirements of thespindle to find its truecenter of rotation overcome the friction betweenthe parts referred to.

The friction of the shoulder 3 and collar on the fixed plate a issufficient to retain the bolster where left by the foot of the spindle,and

the bolster will remain in such position until, by a change of load orotherwise,the spindle, to run true, needs to find another center.

Believing myself to be the first to restrain the lateral or tippingmovement of the bolster in the bolster-case by a friction device orcheck which presses endwise on the bolster and thus holds it where it isleft by the spindle without tendency to resume its central position, Idesire it to be understood that I do notintend to limit my invention tothe exact form of friction device or check herein shown,for it isobvious that other equivalent forms of friction device might be employedwithout departing from my invention; and so,'also, I do not desire tolimit my invention to the exact form of bolster-case or surroundingmetal portion for supporting the bolster.

I claim I a The spindle, the bolster-case,and the bolster therein,combined with a friction-check pressing endwise on or in the directionof the length of the said bolster and thus adapted to restrain thelateral movements thereof, substantially as described. v In testimonywhereof I have signed my name to this specification in the presence oftwo subscribing witnesses.

JAMES H. NORTHROP. Witnesses: 1 WM. F. DRAPER, F. J. BUTCHER.

